void IXmlSerializable.ReadXml(XmlReader reader)
{
if (reader == null) throw new ArgumentNullException(nameof(reader));
Id = Guid.Parse(reader.GetAttribute(nameof(Id)) ??
throw new InvalidOperationException("This license is invalid."));
ProductName = reader.GetAttribute(nameof(ProductName)) ??
throw new InvalidOperationException("This license is invalid.");
ProductVersion = reader.GetAttribute(nameof(ProductVersion)) ??
throw new InvalidOperationException("This license is invalid.");
CustomerName = reader.GetAttribute(nameof(CustomerName)) ??
throw new InvalidOperationException("This license is invalid.");
SerialNumber = reader.GetAttribute(nameof(SerialNumber)) ??
throw new InvalidOperationException("This license is invalid.");
CreationTime = DateTime.Parse(reader.GetAttribute(nameof(CreationTime)) ??
throw new InvalidOperationException("This license is invalid."));
ExpirationTime = ExpirationTime.Parse(reader.GetAttribute(nameof(ExpirationTime)) ??
throw new InvalidOperationException("This license is invalid."));
while (reader.Read())
{
if (reader.NodeType != XmlNodeType.Element) continue;
switch (reader.Name)
{
case "Feature":
{
var feature = LicenseFeature.New(reader.GetAttribute(nameof(LicenseFeature.Name)),
reader.GetAttribute(nameof(LicenseFeature.DisplayName)),
reader.GetAttribute(nameof(LicenseFeature.Value)),
reader.GetAttribute(nameof(LicenseFeature.Description)));
var result = AddFeature(feature);
if (result.Failed) throw new InvalidOperationException(result.Message);
break;
}
case "Attribute":
{
var name = reader.GetAttribute("Name");
reader.Read();
var value = reader.Value;
var result = AddAttribute(name, value);
if (result.Failed) throw new InvalidOperationException(result.Message);
break;
}
}
}
}
public Result AddFeature(LicenseFeature feature)
{
if (feature == null) throw new ArgumentNullException(nameof(feature));
if (Signed) throw new InvalidOperationException("This license already is signed.");
if (_features.Contains(feature)) return Result.Fail($"A feature with name {feature.Name} already exists.");
_features.Add(feature);
return Result.Ok();
}